Yeah, i just wanna stab my voice sometimes, haha. But i am lucky in that it is in the deeper range of the female register. I've definitely passed with it. Although that's simply because I'm easily taken for a 15/16 year old boy. Being at college is totally different. I can pass there, but it's harder, cuz college guys are physically more masculine and noticeably developed (usually). So in that environment, my looks and voice are more likely to get me classified as female.
Since we're sharing voice stories, at college i'm walkin into the library to renew a book i borrowed. At this point I'm definitely passing physically (to those who don't know me)...and then I speak to the guy XD It was funny, the look on his face. Cuz I forgot about keeping my voice more masculine, and was actually higher than normal (I was still attempting to develop the habit). He gave me this shocked/confused expression and there was this lapse of silence before he responded. So yes, voice is important XD But if you have a more ambiguous voice, then I think physical presentation and body language should tip the scales towards a masculine reading.
More and more I'm getting frustrated with my voice though, because I know it's not a guy's voice and it just feels so limited n wrong.
And about correcting people as was previously talked about...yeah. that takes quite a bit of nerve. I only correct people who know about me (excluding family). Even when I'm sure a person will be okay with the correction, I still can't bring myself to say anything. If I see said person semi-frequently it gets irritating and I half hope the irritation will grow to the point where I'm like "Screw this" and just start tellin people that I aint a girl. I don't know why, but I feel like I don't have the right to correct a person as I am now. Like I have nothing to back it up with or somethin. It's hard.